Sean Foley says the best golf advise he ever had was "Don't do anything at the expense of balance."
Most players swing too hard instead of concentrating on creating speed. We can develop speed through
proper leverage of our body, and proper use of the ground as a brace and platform for power.
You need to use your legs, torso, and arms in the correct sequence.
Drill # 1
One drill that you can do to develop speed and balance is the one leg drill. Ball position is inside
the left heel. Keep your rear foot offset
and banked forward on it's toe, weight stays well forward, rear foot is just there for balance support.
You can use an 8 iron for this drill, or any other club in your bag. An 8 iron works very well
because of it's neutral swing plane.
Try to create as much speed as you can while maintaining balance through your finish.
Drill # 2
Hit shots at full speed and hold your finish until the ball lands. You'll find that the left side of
your body will be searching for where that balance point is, and that's proprioception. Proprioception
is the sense of the relative position of neighbouring parts of the body and strength of effort being employed
in movement. Simply put - .your brain works on balancing your body while it's in motion.